216265522 has 16 divisors (see below), whose sum is σ = 356238144. Its totient is φ = 97650000.

The previous prime is 216265519. The next prime is 216265523. The reversal of 216265522 is 225562612.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (216265523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29229 + ... + 35872.

It is an arithmetic number, because the mean of its divisors is an integer number (22264884).

Almost surely, 2^216265522 is an apocalyptic number.

216265522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

216265522 is a deficient number, since it is larger than the sum of its proper divisors (139972622).

216265522 is a wasteful number, since it uses less digits than its factorization.

216265522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65265.

The product of its digits is 14400, while the sum is 31.

The square root of 216265522 is about 14705.9689242158. The cubic root of 216265522 is about 600.2457530324.

The spelling of 216265522 in words is "two hundred sixteen million, two hundred sixty-five thousand, five hundred twenty-two".